WO2020129557A1

WO2020129557A1 - Electrolytic water dispersing device, and blowing device

Info

Publication number: WO2020129557A1
Application number: PCT/JP2019/046284
Authority: WO
Inventors: 弘士小原
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2018-12-17
Filing date: 2019-11-27
Publication date: 2020-06-25
Also published as: CN113167488A; JPWO2020129557A1; CN113167488B; JP7345086B2

Abstract

An electrolytic water dispersing device (100) is provided with an electrolytic water generating unit (105) for generating electrolytic water by means of a pair of electrodes (117), a blower unit (107) for causing the electrolytic water generated by the electrolytic water generating unit (105) to come into contact with air drawn into a housing from an intake port (102), and blowing the same from a blowout port (106), a control unit (130) for controlling an amount of electric power energizing the pair of electrodes (117) of the electrolytic water generating unit (105) and the airflow rate of the blower unit (107), and a gas detecting unit (120) for detecting gas containing the electrolytic water generated by the electrolytic water generating unit (105), wherein the gas detecting unit (120) outputs an output value corresponding to the detected gas detected by the gas detecting unit (120), and the control unit (130) determines the state of the detected gas on the basis of the output value output from the gas detecting unit (120).

Description

Electrolyzed water spraying device and blower

The present disclosure relates to an electrolytic water spraying device that generates and sprays electrolytic water, and a blower including the electrolytic water spraying device.

ㆍIt is known to use an electrolyzed water sprinkler that produces electrolyzed water containing hypochlorous acid by electrolysis and sprays it to remove bacteria, fungi, viruses, odors, etc. in the air.

Conventionally, as a method of detecting the amount of hypochlorous acid produced in an electrolyzed water spraying device, a method of detecting a solution concentration using an electrochemical method is known (Patent Document 1). There is also known a technique of detecting the type and concentration of gas by utilizing the output tendency of a plurality of gas sensors (Patent Document 2).

JP, 2006-26214, A JP, 2017-49057, A

However, in the detection method described in Patent Document 1, it is necessary to use electrodes for detecting the concentration of the solution, which may increase the cost. Further, in the case of detection using an electrochemical method, it is necessary to regularly wash the electrodes, which makes it difficult to maintain detection accuracy. Further, in the detection method described in Patent Document 2, it is necessary to use a plurality of gas sensors, which may increase the cost. That is, when the state (eg, concentration) of the generated gas such as hypochlorous acid is determined by the conventional method, there is a problem that it is relatively complicated and costly.

The present disclosure aims to provide an electrolyzed water spraying device capable of relatively easily and inexpensively determining the state of a generated gas such as hypochlorous acid.

In order to achieve this object, the electrolytic water spraying device of the present disclosure has the following features. That is, the electrolyzed water spraying device of the present disclosure includes an electrolyzed water generation unit, a blower unit, a control unit, and a gas detection unit. The electrolyzed water production unit produces electrolyzed water by a pair of electrodes. The blower unit causes the electrolyzed water generated by the electrolyzed water generation unit to come into contact with the air sucked into the housing through the air inlet and blows the air through the air outlet. The control unit controls the amount of electric power supplied to the pair of electrodes of the electrolyzed water producing unit and the amount of air from the blower unit. The gas detection unit detects the gas containing the electrolyzed water generated by the electrolyzed water generation unit. Further, the gas detection unit outputs an output value according to the detected gas detected by the gas detection unit. The control unit also determines the state of the detected gas based on the output value output from the gas detection unit.

According to the electrolyzed water spraying device of the present disclosure, the state of the detected gas is determined based on the output value of the gas detection unit that detects the gas containing the electrolyzed water generated by the electrolyzed water generation unit. In this way, since it is possible to determine the state of the detected gas such as the amount of hypochlorous acid produced by one gas detection unit, it is possible to realize the electrolytic water spraying device relatively easily and inexpensively. There is.

FIG. 1 is a perspective view of an electrolytic water spraying device according to a first embodiment of the present disclosure. FIG. 2 is a perspective view of the same electrolytic water spraying device. FIG. 3 is a cross-sectional view of the same electrolytic water spraying device. FIG. 4 is a cross-sectional view of the same electrolytic water spraying device. FIG. 5 is a functional block diagram of the same electrolytic water spraying device. FIG. 6A is a functional block diagram of the gas determination unit. FIG. 6B is a flowchart showing the process of determining the state of the detected gas, which is performed by the gas determining unit. FIG. 7A is a diagram showing the relationship between the energized state of a pair of electrodes and the elapsed time. FIG. 7B is a diagram showing an example of output values of the gas detection unit in the energized state of the pair of electrodes shown in FIG. 7A. FIG. 7C is a diagram showing an example of an amount of change from the output value one cycle before when the output value of the gas detection unit shown in FIG. 7B is acquired in a constant cycle. FIG. 8 is a schematic diagram showing an example of the appearance frequency of the amount of change during electrolysis under specific conditions. FIG. 9 is a diagram showing an example of a plurality of threshold ranges and an addition value corresponding to the plurality of threshold ranges. FIG. 10A is a diagram showing the relationship between the energized state of the electrodes and the elapsed time. FIG. 10B is a diagram showing the relationship between the odor occurrence state and the elapsed time. FIG. 10C is a diagram showing an example of the output value of the gas detection unit in the energized state and the odor generating state shown in FIGS. 10A and 10B. FIG. 10D is a diagram showing an example of the amount of change from the output value one cycle before when the output value of the gas detection unit shown in FIG. 10C is acquired in a constant cycle. FIG. 11 is a perspective view of the electrolyzed water spraying device according to the second embodiment of the present disclosure. FIG. 12 is a perspective view of the same electrolytic water spraying device. FIG. 13 is a cross-sectional view of the same electrolytic water spraying device. FIG. 14 is a cross-sectional view of the same electrolytic water spraying device. FIG. 15 is a functional block diagram of the electrolytic water spraying device. FIG. 16 is a flowchart showing the detection gas state determination process executed by the control unit. FIG. 17A is a diagram showing the relationship between the energized state of a pair of electrodes and the elapsed time. FIG. 17B is a diagram showing an example of output values of the gas detection unit in the energized state of the pair of electrodes shown in FIG. 17A. FIG. 17C is a diagram showing an example of the amount of change from the output value one cycle before when the output value of the gas detection unit shown in FIG. 17B is acquired in a constant cycle. FIG. 18 is a schematic diagram showing an example of the appearance frequency of the amount of change during electrolysis under specific conditions. FIG. 19 is a diagram in which the amount of change for each cycle according to the output value of the gas detection unit is classified into a plurality of predetermined ranges. FIG. 20A is a diagram showing the relationship between the energized state of the electrodes and the elapsed time. FIG. 20B is a diagram showing the relationship between the odor occurrence state and the elapsed time. FIG. 20C is a diagram showing an example of output values of the gas detection unit in the energized state and the odor generating state shown in FIGS. 20A and 20B. FIG. 20D is a diagram showing an example of the amount of change from the output value one cycle before when the output value of the gas detection unit shown in FIG. 20C is acquired in a constant cycle.

The electrolyzed water spraying device according to the present disclosure includes an electrolyzed water generation unit, a blower unit, a control unit, and a gas detection unit. The electrolyzed water production unit produces electrolyzed water by a pair of electrodes. The blower unit causes the electrolyzed water generated by the electrolyzed water generation unit to come into contact with the air sucked into the housing through the air inlet and blows the air through the air outlet. The control unit controls the amount of electric power supplied to the pair of electrodes of the electrolyzed water producing unit and the amount of air from the blower unit. The gas detection unit detects the gas containing the electrolyzed water generated by the electrolyzed water generation unit. The gas detection unit outputs an output value according to the detected gas detected by the gas detection unit. The control unit determines the state of the detected gas based on the output value output from the gas detection unit.

As a result, the present electrolyzed water spraying device can determine the state of the detected gas of the active oxygen species contained in the electrolyzed water generated in the electrolyzed water generation unit, and therefore the generation of active oxygen species that differs depending on the environment in which the electrolyzed water sprayer is used. It can be used to determine the state of the detected gas such as the amount.

Further, the control unit includes a gas discriminating unit that discriminates the state of the detected gas, and the gas discriminating unit repeatedly acquires the output value output from the gas detecting unit in a constant cycle, and the change amount of the output value in each cycle. May be calculated, and the arithmetic unit may be configured to determine the state of the detected gas based on the amount of change.

As a result, the present electrolyzed water spraying device can determine the state based on the amount of change in the gas detector that shows different output tendencies depending on the active oxygen species, etc. The state of the detected gas can be determined with relatively high accuracy.

In addition, the gas determination unit compares the change amount with one or more predetermined threshold ranges for each change amount in each cycle calculated by the calculation unit, and obtains the number of change amounts included in the predetermined threshold range. The calculation unit may include a unit, and the calculation unit may determine the state of the detected gas based on the number of change amounts included in the predetermined threshold range acquired by the comparison unit.

As a result, the electrolyzed water spraying device is in a state based on the tendency of the appearance frequency when the active oxygen species to be detected are generated with respect to the amount of change in the gas detection section that shows a different output tendency depending on the active oxygen species. Can be identified. Therefore, it is possible to relatively accurately determine the state of the detected gas, such as the amount of active oxygen species produced, which varies depending on the environment in which the electrolyzed water spraying device is used.

The comparing unit compares the amount of change in each cycle calculated by the arithmetic unit with a plurality of predetermined threshold ranges that are different from each other, and determines the number of change amounts included in each of the plurality of predetermined threshold ranges. And the arithmetic unit may determine the state of the detected gas based on the added value stored corresponding to each of the plurality of predetermined threshold ranges.

As a result, the electrolytic water spraying device of the present invention is based on the tendency of the appearance frequency when the active oxygen species to be detected is generated, with respect to the amount of change in the gas detection section that shows different output tendencies depending on the active oxygen species. The state can be determined from the result of weighting with the added value. Therefore, it is possible to accurately determine the amount of active oxygen species produced, which varies depending on the environment in which the electrolyzed water spraying device is used.

Alternatively, a plurality of predetermined threshold ranges may be changeable.

As a result, the electrolyzed water spraying device of the present invention can accurately determine the amount of active oxygen species produced, etc., which varies depending on the environment in which the electrolyzed water spraying device is used, even when there are characteristic fluctuations in the gas detection part or characteristic changes such as deterioration over time. can do.

Also, the output value may be a voltage value.

Also, the electrolytic water spraying device of the present disclosure may be applied to a blower.

With this, the effect described in the present disclosure can be realized even in the air blower.

Hereinafter, modes for carrying out the present disclosure will be described with reference to the accompanying drawings.

(First embodiment)
First, with reference to FIG. 1 to FIG. 6B, an electrolytic water spraying device 100 according to a first embodiment of the present disclosure will be described. FIG. 1 is a perspective view of the electrolytic water spraying device 100, and is a view of the electrolytic water spraying device 100 as seen from the front side. FIG. 2 is a perspective view of the electrolytic water spraying device 100, and is a view of the electrolytic water spraying device 100 viewed from the front side with the panel 103 of FIG. 1 opened.

As shown in FIGS. 1 and 2, the electrolyzed water spraying device 100 includes a main body case 101 having a substantially box shape, and the main body case 101 has intake ports 102 having a substantially square shape on both side surfaces. An openable air outlet 106 is provided on the top surface of the main body case 101. 1 and 2, the air outlet 106 is in a closed state.

A panel 103 that can be opened and closed is provided on the first main body side surface 101A, which is the right side surface (one side surface of the main body case 101) when viewed from the front surface side of the main body case 101. An intake port 102 is provided in the panel 103. When the panel 103 is opened, a vertically long rectangular opening 104 appears as shown in FIG. A water storage unit 114, a water supply unit 115, a tablet charging case 118a, and the like, which will be described later, can be taken out from the opening 104.

FIG. 3 is a cross-sectional view of the central portion of the electrolytic water spraying device 100 as viewed from the front, and is a view of the electrolytic water spraying device 100 as viewed from the right side. FIG. 3 shows an air passage structure and the like created by the electrolyzed water spraying device 100. FIG. 4 is a cross-sectional view of the right side of the electrolyzed water spraying device 100 taken in the vertical direction, as viewed from the right side of the electrolyzed water spraying device 100. FIG. 4 shows a peripheral configuration regarding generation of electrolyzed water such as a tank member. FIG. 5 is a functional block diagram showing the functions of the electrolytic water spraying device 100 in blocks.

As shown in FIGS. 2 to 5, the main body case 101 is provided with an electrolyzed water generating unit 105, a water supply unit 115, a spraying unit 119, and an air passage 108. The electrolyzed water generation unit 105 includes a pair of electrodes 117 and a water storage unit 114.

As shown in FIGS. 2 and 3, the water storage unit 114 has a box shape with an open top, and has a structure capable of storing water. The water storage unit 114 is arranged in the lower portion of the main body case 101, can be detached by sliding horizontally from the main body case 101, and can be taken out from the opening 104. The water storage unit 114 stores the water supplied from the water supply unit 115.

The pair of electrodes 117 shown in FIG. 4 includes an electrode member (not shown), and the electrode member is installed so as to be immersed in the water in the water storage unit 114. The pair of electrodes 117 electrochemically electrolyze the water containing chloride ions in the water storage section 114 by energizing the electrode members to generate electrolyzed water containing active oxygen species. Here, the active oxygen species are an oxygen molecule having a higher oxidation activity than normal oxygen and its related substances. The active oxygen species include, for example, so-called narrowly defined active oxygen such as superoxide anion, singlet oxygen, hydroxy radical, or hydrogen peroxide, and so-called broadly defined active oxygen such as ozone and hypochlorous acid (hypohalous acid). including.

The pair of electrodes 117 has a period of energization for energizing the electrode members for electrolysis and a period of time after the energization is stopped, that is, a period of non-energization, which is a period of non-energization, as one period. Electrolyzed water is generated by repeating a plurality of times. By providing the electrode member with a non-energized time, the life of the electrode member can be extended. If the energization time is made longer than the non-energization time, electrolyzed water containing a larger amount of active oxygen species is generated per cycle. Further, if the non-energization time is made longer than the energization time, generation of active oxygen species per cycle can be suppressed. Further, if the amount of power during the energization time is increased, electrolyzed water containing a larger amount of active oxygen species is generated.

As shown in FIG. 2, the electrolysis-promoting tablet charging section 118 is detachably provided on the tablet charging case 118a, a tablet charging member (not shown) provided in the tablet charging case 118a, and an upper portion of the tablet charging case 118a. The tablet loading cover 118b is provided. The tablet loading case 118a is configured to be removable from the opening 104. The user removes the tablet loading cover 118b from the taken-out tablet loading case 118a, so that the user can load the electrolytic promotion tablets into the tablet loading case 118a. The electrolysis-promoting tablets loaded in the tablet loading case 118a are loaded into the water storage unit 114.

Specifically, the electrolysis-promoting tablet feeding unit 118 rotates the tablet feeding member when feeding the electrolysis-promoting tablets to the water storage unit 114. When the tablet charging member rotates, the electrolysis promoting tablets drop into the water storage unit 114 through a drop opening (not shown) on the bottom surface of the tablet charging case 118a. The electrolysis-promoting tablet feeding unit 118 counts the number of electrolysis-promoting tablets that have dropped from the tablet feeding case 118a to the water storage unit 114, and if it is determined that one electrolysis-promoting tablet has dropped from the tablet feeding case 118a to the water storage unit 114, the tablet Stop the rotation of the dosing member. By dissolving the electrolysis-promoting tablets in the water in the water storage portion 114, water containing chloride ions is generated in the water storage portion 114. In addition, an example of the electrolysis promoting tablet is sodium chloride.

Note that the electrolyzed water spraying device 100 does not have to have the electrolysis-promoting tablet charging unit 118. In this case, the electrolyzed water spraying device 100 may give a notification to the user to instruct the user to insert the electrolysis-promoting tablet by displaying or sounding, and may cause the user to directly put the electrolysis-promoting tablet into the water storage unit 114. ..

Further, the electrolytic water spraying device 100 includes a gas detection unit 120 and a control unit 130, as shown in FIG.

The gas detection unit 120 detects a gas containing electrolyzed water generated by the pair of electrodes 117 and outputs an output value according to the detected gas. In the present embodiment, the case where the output value output by the gas detection unit 120 is a voltage value will be described as an example. Details of the gas detection unit 120 will be described later with reference to FIGS. 6A and 6B.

The control unit 130 is provided, for example, on the back side of the operation panel provided on the top surface of the main body case 101 (see FIG. 1), and controls the electrolytic water spraying device 100. The control unit 130 controls the electrolysis of water by the pair of electrodes 117, and controls the charging of the electrolysis-promoting tablets by the electrolysis-promoting tablet charging unit 118. In particular, the control unit 130 includes a gas discriminating unit 131, and uses the gas discriminating unit 131 to discriminate the state of the detected gas based on the output value of the detected gas output by the gas detecting unit 120. Details of the gas discriminating unit 131 will be described later with reference to FIGS. 6A and 6B. The function of the control unit 130 is realized by a processor (not shown) executing a program stored in a memory (not shown).

As shown in FIG. 2, the water supply section 115 is installed inside the main body case 101 on the side surface on the right side in a front view, has a structure detachable from the water storage section 114, and can be taken out from the opening 104. The water supply unit 115 is attached to a tank holding unit 114 a provided on the bottom surface of the water storage unit 114. The water supply unit 115 includes a tank 115a for storing water, and a lid 115b provided at an opening (not shown) of the tank 115a. An opening/closing part (not shown) is provided at the center of the lid 115b, and when the opening/closing part is opened, the water in the tank 115a is supplied to the water storage part 114.

Specifically, when the tank 115a is attached to the tank holding part 114a of the water storage part 114 with the opening of the tank 115a facing downward, the opening/closing part is opened by the tank holding part 114a. That is, when water is poured into the tank 115a and attached to the tank holding portion 114a, the opening/closing portion is opened and water is supplied to the water storage portion 114, and water is stored in the water storage portion 114. When the water level in the water storage unit 114 rises and reaches the position of the lid 115b, the water supply stops because the opening of the tank 115a is sealed with water, and the water remains in the tank 115a. Whenever the water falls, the water in the tank 115a is supplied to the water storage unit 114. That is, the water level in the water storage section 114 is kept constant.

Note that the electrolytic water spraying device 100 may not have the tank 115a as the water supply unit 115. In this case, a line for supplying water to the electrolyzed water spraying device 100 is drawn from the tap water, and when the water level in the water storage section 114 drops, the water level in the water storage section 114 rises to a predetermined position. Water may be supplied.

As shown in FIG. 3, the spraying unit 119 includes a blower unit 107 and a filter unit 116. The blower unit 107 is provided in the center of the main body case 101, and includes a motor unit 109, a fan unit 110 rotated by the motor unit 109, and a scroll-shaped casing unit 111 surrounding them. The motor section 109 is fixed to the casing section 111.

The fan unit 110 is a sirocco fan and is fixed to the rotating shaft 109a extending in the horizontal direction from the motor unit 109, and the motor unit 109 is fixed to the casing unit 111 as described above. The rotation shaft 109a of the motor unit 109 extends from the front surface side of the body case 101 to the back surface side. The casing portion 111 has a discharge port 112 on the upper surface side of the main body case 101 of the casing portion 111, and has a suction port 113 on the rear surface side of the main body case 101 of the casing portion 111.

The air volume of the blower unit 107 is determined based on the air volume set by the user. Based on the determined air volume, the control unit 130 controls the rotation amount of the motor unit 109.

The filter unit 116 is a member that brings the electrolyzed water stored in the water storage unit 114 into contact with the room air that has flowed into the main body case 101 (that is, inside the housing) by the blower unit 107. The filter portion 116 is formed in a cylindrical shape, and has a filter 116a provided with a hole through which air can flow in the circumferential portion. The filter 116a is rotatably built in the water storage unit 114 with the central axis of the filter 116a as the center of rotation so that one end of the filter 116a is immersed in the water of the water storage unit 114 to retain water. The filter unit 116 is rotated by a drive unit (not shown) so that the electrolyzed water and the room air are brought into continuous contact with each other.

The air passage 108 connects the air inlet 102 and the air outlet 106, and is provided with a filter unit 116, a blower unit 107, and an air outlet 106 in order from the air inlet 102. When the fan unit 110 is rotated by the motor unit 109, the external air sucked from the intake port 102 and entering the air passage 108 is sequentially passed through the filter 116 a, the air blowing unit 107, and the air outlet 106, and then the electrolytic water spraying device 100. Is blown out of. Thereby, the electrolyzed water generated in the water storage unit 114 is sprayed to the outside. The electrolyzed water spraying device 100 does not necessarily have to spray the electrolyzed water itself, but may spray the active oxygen species derived from the electrolyzed water (including volatilization) generated as a result.

A method for determining the state of the detected gas by the gas determination unit 131 will be described with reference to FIGS. 6A and 6B.

FIG. 6A is a functional block diagram showing the functions of the gas discriminating unit 131 in blocks. The gas discriminating unit 131 includes a comparing unit 132 and a calculating unit 133. The gas determination unit 131 acquires an output value (voltage value) corresponding to the detected gas output from the gas detection unit 120 every predetermined time (for example, 1 second). The calculation unit 133 acquires the change amount of the output value by calculating the difference between the output value of the gas detection unit 120 acquired at a certain time point and the output value of the gas detection unit 120 acquired a predetermined time before the certain time point. To do. The calculation unit 133 acquires a plurality of change amounts by repeating this calculation every predetermined time. That is, the calculation unit 133 calculates the amount of change in the output value in each cycle.

The comparison unit 132 compares the amount of change in the output value of the gas detection unit 120 acquired by the calculation unit 133 with the magnitudes of the plurality of threshold ranges, and the acquired amount of change corresponds to which threshold range of the plurality of threshold ranges. Whether or not it is included is calculated, and the number of change amounts included in the threshold range is recorded. The comparison unit 132 records the number of change amounts included in each of the plurality of threshold ranges by repeating this calculation and recording every predetermined time.

Further, the calculation unit 133 performs a calculation of adding the addition value set corresponding to each of the plurality of threshold ranges to the number of change amounts included in each of the plurality of threshold ranges obtained by the comparison unit 132. The state of the detected gas is determined using the added result. A specific method for determining the state of the detected gas will be described later with reference to FIGS. 7A to 9. The plurality of threshold ranges and the added value set corresponding to each of the plurality of threshold ranges are stored in a memory (not shown), and the number of change amounts included in each of the plurality of threshold ranges is also stored in the memory. Recorded in.

The gas detector 120 is composed of, for example, a semiconductor gas sensor. The gas sensor element is composed of a heater integrated with a metal oxide material. By applying power to the sensor, the metal oxide material is heated by the heater. In this gas sensor element, the gas is detected based on the change in resistance value caused by the detectable gas coming into contact with the metal oxide material. For example, in a clean atmosphere, the surface of the metal oxide material is affected by oxygen in the atmosphere, the movement of free electrons is restricted, and the conductivity decreases, so that the resistance value is high. When a detectable gas comes into contact with the surface of the metal oxide material in this state, oxygen on the surface of the metal oxide material is consumed, the movement of free electrons, which had been limited up to that point, is released, and the conductivity becomes high, so that the temperature is low. Indicates the resistance value. By converting the difference in the resistance value into a voltage output and acquiring the difference, the gas to be detected can be detected.

FIG. 6B is a flowchart showing the process of determining the state of the detected gas.

The gas determination unit 131 first repeatedly obtains the output value (voltage value as an example) output from the gas detection unit 120 every predetermined time (for example, 1 second) for a predetermined period (for example, 1 minute) (step S11). ). The output value is acquired using, for example, an analog/digital (A/D) converter.

The calculation unit 133 calculates the amount of change in the output value of the gas detection unit 120 by calculating the difference between the output value acquired at step S11 at a certain time point and the output value acquired a predetermined time before the certain time point. By repeating this, a plurality of change amounts (change amounts at predetermined time intervals) are calculated (step S12).

Next, the comparison unit 132 compares each of the plurality of changes obtained in step S12 with a plurality of threshold ranges, and records the number of changes in the threshold range that includes the changes. As a result, the number of change amounts included in each of the plurality of threshold ranges is acquired (step S13).

The calculation unit 133 adds an addition value corresponding to the threshold range to the number of change amounts included in each of the plurality of threshold ranges obtained in step S13 (step S14). Finally, the calculation unit 133 determines the state of the detected gas according to the calculated value after addition (step S15).

Note that the output results obtained by the state determination are the type of detection gas, the presence or absence of detection gas, the concentration of detection gas, etc. For example, by comparing the value calculated by the calculation unit 133 obtained in step S14 with an arbitrary threshold value, it is possible to obtain the type of gas to be detected and the presence/absence of gas to be detected. Further, it is possible to obtain the density value as an output result by using a value correlated with the density as the added value added by the calculation unit 133 in step S14.

Further, in FIG. 6B, the calculation unit 133 calculates the amount of change in the output value for each predetermined time using the plurality of output values acquired for each predetermined time in Step S11 (Step S12), and the comparison unit 132 , The change amounts of the plurality of output values obtained in step S12 are compared with the plurality of threshold ranges (step S13). However, the flowchart of the state determination process of the detected gas illustrated in FIG. 6B is an example. For example, the processing of steps S11 to S13 is changed as follows, and the changed processing of steps S11 to S13 is repeatedly executed every predetermined time for a predetermined period (or a certain number of times), and then the processing of steps S14 and S15 is performed. You may That is, step S11 is changed to a process of acquiring the output value output from the gas detection unit 120 only once, and step S12 is changed to the output value acquired in step S11 after the change and a predetermined time before that. The difference between the acquired output values is calculated to change the processing to calculate the amount of change. Further, step S13 is changed to a process of comparing the change amount obtained in step S12 after the change with a plurality of threshold ranges. Then, by repeating the processing of steps S11 to S13 after this change for a predetermined period (for example, 1 minute) or a certain number of times (for example, 60 times) every predetermined time, the same as the processing result of step S13 shown in FIG. 6B is obtained. In addition, the number of change amounts included in each of the plurality of threshold ranges can be acquired.

A method for specifically determining the state of the detected gas will be described with reference to FIGS. 7A to 9.

7A to 7C show an example of the output value (voltage value) of the gas detection unit 120 and the amount of change thereof when the pair of electrodes 117 of the electrolyzed water generation unit 105 are energized to perform electrolysis. The gas detection unit 120 is arranged in the vicinity of the electrolyzed water generating unit 105 or the like and has a configuration capable of detecting a gas containing hypochlorous acid due to electrolyzed water generated by the electrolyzed water generating unit 105. The pair of electrodes 117 forming the electrolyzed water generating unit 105 are installed in the water storage unit 114. FIG. 7A is a diagram showing an energized state and elapsed time of the pair of electrodes 117 of the electrolyzed water producing unit 105. Electrolysis is performed by passing a current through the pair of electrodes 117. FIG. 7B is a diagram showing the output value of the gas detection unit 120 in the energized state of the pair of electrodes 117 shown in FIG. 7A. FIG. 7C is a diagram showing an example of an amount of change from the output value one cycle before when the output value of the gas detection unit shown in FIG. 7B is acquired in a constant cycle. When electrolysis is performed, the output of the gas detection unit 120 changes according to the detection gas containing hypochlorous acid produced by electrolyzed water. For a plurality of output values of the gas detection unit 120 acquired every predetermined time, a change amount that is a difference between an output value acquired at a certain time and an output value acquired a predetermined time before the certain time is obtained. This amount of change is shown in FIG. 7C.

FIG. 8 shows, as an example, the appearance frequency of the amount of change in the output value of the gas detection unit 120 acquired by the calculation unit 133 when electrolysis is performed under specific conditions while the electrodes are energized shown in FIG. 7A. .. The results of long-term data acquisition under the same electrolysis conditions are shown, and the number of changes in the output value of the gas detection unit 120 with respect to the acquired data is shown. The output tendency of the appearance frequency shows a similar tendency to some extent, although there is some variation when the positional relationship between the electrolyzed water production unit 105 and the gas detection unit 120 and the electrolysis production condition are determined.

FIG. 9 is a diagram showing an example of a plurality of threshold ranges and an added value according to the plurality of threshold ranges. As shown in FIGS. 8 and 9, a plurality of threshold ranges with respect to the amount of change are set as follows. The threshold range d2 indicates a region in which the amount of change is smaller than −0.05V. The threshold range c2 indicates a region in which the amount of change is −0.05 V or more and less than −0.02 V. The threshold range b2 indicates a region in which the amount of change is −0.02V or more and less than −0.01V. The threshold range a2 indicates a region in which the amount of change is −0.01 V or more and less than 0 V. The threshold range a1 indicates a region in which the amount of change is 0 V or more and less than +0.01 V. The threshold range b1 indicates a region in which the amount of change is +0.01 V or more and less than +0.02 V. The threshold range c1 indicates a region in which the amount of change is +0.02V or more and less than +0.05V. The threshold range d1 indicates a region in which the amount of change is +0.05 V or more.

In FIG. 8, the frequency of appearance of the threshold range b1, the threshold range b2, and the threshold range c2 is high. The peak of the appearance frequency in the threshold range is large in the threshold range b1 because the output value of the gas detection unit 120 changes with the detection gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 105. It has been confirmed experimentally that The appearance frequency of the specific threshold range increases depending on the installation positions of the electrolyzed water production unit 105 and the gas detection unit 120, the electrolysis production conditions, and the like. If the type or concentration of the detected gas changes, the output change tendency of the gas detection unit 120 changes. For example, in the case of a semiconductor gas sensor, the oxygen consumption on the surface of the metal oxide differs depending on the type and concentration of the generated gas. In this way, it is possible to detect the type and concentration of the detected gas based on the difference in the appearance frequency of the amount of change of the gas detection unit 120 calculated by the calculation unit 133.

The amount of change in the output value due to the detection gas containing hypochlorous acid due to the electrolyzed water generated by the electrolyzed water generation unit 105 shows the peak of the appearance frequency shown in the threshold range b1, as described above. As an example, the calculation unit 133 calculates based on this tendency using the added value shown in FIG. 9. The added value is set corresponding to each of a plurality of threshold ranges. That is, when the change amount of the gas detection unit 120 calculated by the calculation unit 133 is in the threshold range b1, 10 is added as the additional value. Further, when the amount of change of the gas detection unit 120 calculated by the calculation unit 133 is outside the threshold range b1, it does not include hypochlorous acid due to the electrolyzed water generated by the electrolyzed water generation unit 105, and therefore the addition value of -1. Is added. In this way, by adding the change amount calculated by the calculation unit 133 and the added value corresponding to the threshold range, the concentration of hypochlorous acid in the electrolyzed water generated by the electrolyzed water generation unit 105 is accurately detected, It is possible to identify the detected gas.

As mentioned above, when the installation position and generation conditions are decided, the tendency of the appearance frequency becomes equal. Therefore, the accuracy of detecting the concentration of hypochlorous acid is improved by increasing the added value with respect to the amount of change in the detection gas containing hypochlorous acid generated by the electrolyzed water generation unit 105. ing.

Further, when the concentration of hypochlorous acid in the electrolyzed water generated by the electrolyzed water generation unit 105 is high, the number of changes that change to the range of the threshold range b1 increases. The value of becomes even larger. On the other hand, when the type of the detected gas changes, the tendency of the appearance frequency changes, and the value after addition calculated by the calculation unit 133 becomes small. That is, the state of the detected gas can be discriminated by the magnitude of the value after the addition calculated by the calculation unit 133. Further, the value after addition calculated by the calculation unit 133 is compared with a specific comparison threshold value, and when it is equal to or larger than the specific threshold value, it can be determined that the gas to be detected exists. It is also possible to measure the concentration of the gas to be detected by a separate measuring device or the like and convert it into the concentration value by using the added value correlated with the concentration.

Note that, in the above description, the case where there are eight threshold value ranges has been described, but it is also possible to set the voltage ranges of a plurality of threshold values to be narrower and to make a determination using more threshold values. Since the addition value is set more finely with respect to the tendency of the appearance frequency of the detection gas containing the electrolyzed water generated by the electrolyzed water generation unit 105, the gas to be detected can be detected with high accuracy.

Note that the gas detection unit 120 may be shared for control according to the odor level of the usage environment. The odor shown here is assumed to be, for example, odor caused by cigarette smoke. In this case, the gas detection unit 120 needs to be arranged at a position where the odor component of the environment can be detected. For example, it can be realized by arranging in the air passage 108 or the like. The gas detection unit 120 is used to detect the gas containing the electrolyzed water generated by the electrolyzed water generation unit 105, determine the odor level of the usage environment, and control the electrolyzed water spraying device 100 according to the odor level.

10A to 10D show an example of the output of the gas detection unit 120 in the case where odor is generated in the usage environment in addition to the states of FIGS. 7A to 7C. FIG. 10A is a diagram showing an energized state and elapsed time of the pair of electrodes 117 of the electrolyzed water producing unit 105. Electrolysis is performed by energizing the pair of electrodes 117 of the electrolyzed water producing unit 105. FIG. 10B is a diagram showing a state of occurrence of odor in the usage environment and elapsed time. FIG. 10C is a diagram showing the output value of the gas detection unit 120 in the energized state of the pair of electrodes 117 shown in FIG. 10A and the odor generation state shown in FIG. 10B. FIG. 10D is a diagram showing an example of output values of the gas detection unit in the energized state and the odor generating state shown in FIG. 10C. The output value of the gas detection unit 120 changed according to the detection gas containing the electrolyzed water generated by the electrolyzed water generation unit 105 and the output value due to the odor generation are superimposed and output. When the odor is generated in the environment of use, the odor diffuses into the space, and the concentration becomes uniform over time in the space. For this reason, as shown in FIG. 10C, after the odor is generated, the gas detection unit 120 shows a stable output value to some extent. Here, when the pair of electrodes 117 are energized, the output of the gas detection unit 120 makes a sharp change due to the detection gas containing the electrolyzed water generated by the electrolyzed water generation unit 105. Further, when the pair of electrodes 117 is in the non-energized state, the output value of the gas detection unit 120 returns to the output level when the odor is generated, and the odor is eliminated, so that the output value tends to return to the output value equivalent to that in FIG. 7B. FIG. 10D shows a change amount that is a difference between an output value acquired at a certain time point and an output value acquired a predetermined time period before a certain time point in a plurality of output values of the gas detection unit 120 acquired at every predetermined time period. Shows.

Comparing FIG. 10D and FIG. 7C, the change amount of the gas detection unit 120 shows the same output tendency regardless of the presence or absence of odor in the use environment. That is, the gas containing the electrolyzed water generated by the electrolyzed water generating unit 105 can be detected regardless of the odor generation. In other words, the odor of the usage environment can be determined using the gas detection unit 120. In the odor determination of the usage environment, the sharp output change of the gas detection unit 120 when the pair of electrodes 117 is in the energized state leads to a reduction in the detection accuracy of the odor determination. Therefore, for example, processing such as determination is performed excluding the output of the gas detection unit 120 when the pair of electrodes 117 is in the energized state. As a result, the influence of the detection gas containing the electrolyzed water generated by the electrolyzed water generation unit 105 can be reduced, and the odor level of the use environment can be determined. Based on the result of the odor level determination, the control unit 130 controls the input power to the pair of electrodes 117 of the electrolyzed water generating unit 105, the air volume of the air blowing unit 107, and the like. The gas detection unit 120 detects the gas containing the electrolyzed water generated by the electrolyzed water generation unit 105 and determines the odor level of the usage environment. As a result, the control of the electrolytic water spraying device 100 according to the odor level of the use environment can be realized without providing an additional sensor while suppressing an increase in cost.

Note that multiple threshold ranges may be changeable by user operation. For example, when the gas detection unit 120 has deteriorated in sensitivity due to life etc., the amount of change in the output value of the gas detection unit 120 becomes small. The sensitivity can be adjusted by adjusting the threshold range with respect to the sensitivity deterioration of the gas detection unit 120. It is possible to make settings suitable for the actual use environment, such as variations in manufacturing of the gas detection unit 120, deterioration of the service life, and effects due to differences in the use environment. The sensitivity setting method may be configured such that a sensitivity setting switch is provided on the operation panel provided on the top surface of the main body case 101 and the user operates the switch. Further, as the set value, a plurality of fixed values determined experimentally may be set, or an arbitrary value may be set.

In the above description, the calculation unit 133 obtains the amount of change from the output value of the gas detection unit 120 acquired every predetermined time, and the state of the detected gas is calculated based on the added value set for each of the plurality of threshold ranges. Although the determination is made, it is not limited to this. That is, this state determination result may be acquired every predetermined time, and the final detection gas state determination result may be calculated. By obtaining the state determination result of the detected gas at every predetermined time and performing the averaging process, it is possible to suppress the variation of the determination result, and thus it is possible to improve the determination accuracy.

Also, by using moving average processing as the averaging method, it is possible to output the result of state determination of the detected gas corresponding to the passage of time. In the moving average processing, for example, when the number of data to be averaged is 5, the processing is performed by averaging the past 5 data including the acquired data, and an output showing the tendency of data change from the past is obtained. It is a thing. When the gas containing the electrolyzed water generated by the electrolyzed water generation unit 105 is detected, the state of the electrolyzed water changes moderately with time, so that the moving average process appropriately changes the state of the electrolyzed water. Can be determined. In the simple averaging process, since the state determination is performed using the data for each predetermined time, a sharp change occurs depending on the data used when performing the averaging process under the influence of the surrounding environment. By the moving averaging process, the state of the detection gas containing the electrolyzed water generated by the electrolyzed water generation unit 105 can be discriminated while suppressing the influence of the surrounding environment.

In the above description, the amount of change is obtained from the output value of the gas detection unit 120 acquired by the gas determination unit 131 every predetermined time, and the state of the detected gas is determined based on the added value set for each of the plurality of threshold ranges. However, the state of the detected gas may be determined from the output value of the gas detection unit 120 or the amount of change. As described above, the output value of the gas detection unit 120 changes depending on the gas to be detected. That is, the output value and the amount of change of the gas detection unit 120 change according to the type and concentration of the detected gas. That is, it is possible to determine the possibility of the presence of the gas to be detected by comparing the output value and the change amount with a specific threshold value.

As described above, in the electrolyzed water spraying apparatus 100, the state of the gas to be detected is determined by comparing the amount of change in the output value of the gas to be detected by the gas detection unit 120 with a plurality of predetermined threshold ranges. It can be realized with high accuracy.

Although the present disclosure has been described based on the first embodiment, the present disclosure is not limited to the first embodiment, and various improvements and modifications can be made without departing from the spirit of the present disclosure. This can be easily guessed. For example, the numerical values described in the first embodiment are examples, and it is naturally possible to adopt other numerical values.

(Second embodiment)
2. Description of the Related Art An electrolyzed water spraying device is known that electrolyzes electrolyzed water to generate and spray electrolyzed water containing hypochlorous acid in order to remove bacteria, fungi, viruses, odors, etc. in the air.

However, since the detection method described in Patent Document 1 requires the use of an electrode for detecting the solution concentration, there is a risk that the cost will increase. Further, in the case of detection using an electrochemical method, it is necessary to regularly wash the electrodes, which makes it difficult to maintain detection accuracy. Further, in the detection method described in Patent Document 2, it is necessary to use a plurality of gas sensors, which may increase the cost. That is, when the state (eg, concentration) of the generated gas such as hypochlorous acid is determined by the conventional method, there is a problem that it is relatively complicated and costly.

The present disclosure provides, for example, an electrolyzed water spraying device capable of relatively easily and inexpensively determining the state of a detected gas such as the presence or absence of gas such as hypochlorous acid and the amount of gas such as hypochlorous acid generated. The purpose is to do.

In order to achieve this object, the electrolytic water spraying device of the present disclosure has the following features. That is, the electrolyzed water spraying device of the present disclosure includes an electrolyzed water generation unit, a blower unit, a control unit, and a gas detection unit. The electrolyzed water production unit produces electrolyzed water by a pair of electrodes. The blower unit causes the electrolyzed water generated by the electrolyzed water generation unit to come into contact with the air sucked into the housing through the air inlet and blows the air through the air outlet. The control unit controls the amount of electric power supplied to the pair of electrodes of the electrolyzed water producing unit and the amount of air from the blower unit. The gas detection unit detects the gas containing the electrolyzed water generated by the electrolyzed water generation unit. Further, the gas detection unit outputs an output value according to the detected gas detected by the gas detection unit. Further, the control unit repeatedly acquires the output value output from the gas detection unit in a predetermined cycle for a predetermined period, calculates the change amount of the output value in each cycle, and the change amount for each change amount in each cycle. A plurality of predetermined ranges are compared, an integrated value that is the number of appearances of the amount of change in each predetermined range is calculated, and the state of the detected gas is determined based on the information of the calculated integrated value for each predetermined range. ..

According to the electrolyzed water spraying device of the present disclosure, the integrated value, which is the appearance frequency of the amount of change in the output value of the gas detection unit that detects the gas containing the electrolyzed water generated in the electrolyzed water generation unit, for each predetermined range. The state of the detected gas is determined based on the calculated and integrated value information. As a result, for example, the presence or absence of the formation of hypochlorous acid or the like and the state of the detected gas such as the amount of the generated hypochlorous acid or the like can be determined relatively easily and inexpensively.

The electrolyzed water spraying device according to the present disclosure includes an electrolyzed water generation unit that generates electrolyzed water by a pair of electrodes, and the electrolyzed water generated by the electrolyzed water generation unit, which is brought into contact with air sucked into the housing through an intake port and blows the water. An air blower that blows air from the outlet, a controller that controls the amount of electric power that is applied to the pair of electrodes of the electrolyzed water generator and the air volume of the air blower, and detects the gas that contains the electrolyzed water generated by the electrolyzed water generator A gas detection unit, comprising: an electrolyzed water spraying device, wherein the gas detection unit outputs an output value corresponding to the detected gas detected by the gas detection unit, and the control unit outputs the output from the gas detection unit. The output value is repeatedly acquired in a fixed cycle for a predetermined period, the change amount of the output value in each cycle is calculated, and for each change amount in each cycle, the change amount is compared with a plurality of predetermined ranges, and the predetermined range is determined. An integrated value, which is the number of appearances of the amount of change for each, is calculated, and the state of the detected gas is determined based on the information on the calculated integrated value for each predetermined range.

Thereby, the present electrolyzed water sprinkling apparatus, a plurality of calculated using the output value of the detection gas containing both the gas containing the active oxygen species and the by-product gas which is a by-product when the active oxygen species are generated. It is possible to determine the state of the detected gas based on the information of the integrated value for each predetermined range. That is, by using the information of the integrated value for each of a plurality of predetermined ranges, another gas whose output value of the gas detection section shows a tendency similar to that of the gas containing the active oxygen species is separated from the gas containing the active oxygen species. It is possible to prevent erroneous determination as Even if the gas containing active oxygen species has a low concentration and the discrimination accuracy is low, whether the active oxygen species are generated more accurately by considering the outputs of both the active oxygen species and the secondary gas. Can be determined.

Also, the control unit may be configured to determine the generation of a specific gas in the detected gas based on the ratio of the integrated value of the amount of change for each predetermined range.

Thereby, the present electrolyzed water sprinkling apparatus, a plurality of calculated using the output value of the detection gas containing both the gas containing the active oxygen species and the by-product gas which is a by-product when the active oxygen species are generated. It is possible to more accurately determine the generation of the active oxygen species based on the ratio of the integrated value for each predetermined range. That is, by using the ratio of the integrated value for each of a plurality of predetermined ranges, another gas whose output value of the gas detection section shows a tendency similar to that of the gas containing the active oxygen species is separated from the gas containing the active oxygen species. It is possible to prevent erroneous determination as Even when the gas containing active oxygen species has a low concentration and the discrimination accuracy is low, the generation of active oxygen species can be more accurately performed by discriminating by considering the outputs of both the active oxygen species and the secondary gas. Can be determined.

The control unit may be configured to determine the concentration of a specific gas in the detected gas based on the integrated value of the amount of change for each predetermined range.

As a result, the integration for each of a plurality of predetermined ranges calculated using the output value of the detection gas that includes both the gas containing the active oxygen species and the by-product that is a by-product when the active oxygen species are generated. The concentration (generation amount) of the active oxygen species can be more accurately determined based on the value.

Also, the ratio of integrated values may be changeable.

This allows calculation of the amount of gas containing active oxygen species generated in the electrolyzed water generation unit, even if there are characteristic changes such as differences in the generation conditions of the electrolyzed water generation unit or variations in the characteristics of the gas detection unit. Since it can be performed, it is possible to accurately calculate the generation amount of the active oxygen species generated in the electrolyzed water generation unit.

Also, a plurality of predetermined ranges may be configured to be changeable.

As a result, even if there is a characteristic variation of the gas detection unit or a characteristic change such as deterioration over time, the amount of the gas containing the active oxygen species generated in the electrolyzed water generation unit can be calculated, so that it can be accurately calculated. The amount of active oxygen species generated in the electrolyzed water generating unit can be calculated.

Also, the output value may be a voltage value.

Hereinafter, modes for carrying out the present disclosure will be described with reference to the accompanying drawings. Note that the following second embodiment is an example in which the present disclosure is embodied and does not limit the technical scope of the present disclosure. In addition, the same reference numerals are given to the same portions throughout the drawings, and the description thereof is omitted. Furthermore, in each drawing, the description of the details of each unit not directly related to the present disclosure is omitted.

First, with reference to FIGS. 11 to 16, an electrolytic water spraying device 200 according to a second embodiment of the present disclosure will be described. FIG. 11 is a perspective view of the electrolytic water spraying device 200, and is a view of the electrolytic water spraying device 200 seen from the front side. 12 is a perspective view of the electrolytic water spraying device 200, and is a view of the electrolytic water spraying device 200 seen from the front side with the panel 203 of FIG. 11 opened.

As shown in FIGS. 11 and 12, the electrolyzed water spraying device 200 includes a substantially box-shaped main body case 201, and has substantially square-shaped intake ports 202 on both side surfaces of the main body case 201. An openable air outlet 206 is provided on the top surface of the main body case 201. 11 and 12, the air outlet 206 is in a closed state.

A panel 203 that can be opened and closed is provided on the first main body side surface 201A that is the right side surface (one side surface of the main body case 201) when viewed from the front surface side of the main body case 201. An intake port 102 is provided in the panel 203. When the panel 203 is opened, as shown in FIG. 12, a vertically long rectangular opening 204 appears. A water storage unit 214, a water supply unit 215, a tablet charging case 218a, etc., which will be described later, can be taken out from the opening 204.

FIG. 13 is a cross-sectional view in which the central portion of the electrolytic water spraying device 200 is vertically cut, and is a view of the electrolytic water spraying device 200 seen from the right side. FIG. 13 shows an air passage structure and the like created by the electrolyzed water spraying device 200. FIG. 14 is a cross-sectional view of the right side of the electrolyzed water spraying device 200 taken in a vertical direction, as viewed from the right side of the electrolyzed water spraying device 200. FIG. 14 shows a peripheral configuration regarding generation of electrolyzed water such as a tank member. FIG. 15 is a functional block diagram showing the functions of the electrolytic water spraying device 200 in blocks.

As shown in FIGS. 12 to 15, the main body case 201 is provided with an electrolyzed water generation unit 205, a water supply unit 215, a spraying unit 219, and an air passage 208. The electrolyzed water generating unit 205 includes a pair of electrodes 217 and a water storage unit 214.

As shown in FIGS. 12 and 13, the water storage unit 214 has a box shape with an open top, and has a structure capable of storing water. The water storage section 214 is arranged in the lower part of the main body case 201, is horizontally slidable from the main body case 201 and is attachable/detachable, and can be taken out from the opening 204. The water storage unit 214 stores the water supplied from the water supply unit 215.

The pair of electrodes 217 shown in FIG. 14 includes an electrode member (not shown), and the electrode member is installed so as to be submerged in the water in the water storage unit 214. The pair of electrodes 217 electrochemically electrolyzes the water containing chloride ions in the water storage section 214 by energizing the electrode members to generate electrolyzed water containing active oxygen species. Here, the active oxygen species are an oxygen molecule having a higher oxidation activity than normal oxygen and its related substances. The active oxygen species include, for example, so-called narrowly defined active oxygen such as superoxide anion, singlet oxygen, hydroxy radical, or hydrogen peroxide, and so-called broadly defined active oxygen such as ozone and hypochlorous acid (hypohalous acid). including.

The pair of electrodes 217 has a period of energization for electrolyzing the electrode member and a period of time after the energization is stopped, that is, a period of non-energization that is a period of non-energization, as one period. Electrolyzed water is generated by repeating a plurality of times. By providing the electrode member with a non-energized time, the life of the electrode member can be extended. If the energization time is made longer than the non-energization time, electrolyzed water containing a larger amount of active oxygen species is generated per cycle. Further, if the non-energization time is made longer than the energization time, generation of active oxygen species per cycle can be suppressed. Further, if the amount of power during the energization time is increased, electrolyzed water containing a larger amount of active oxygen species is generated.

As shown in FIG. 12, the electrolysis-promoting tablet charging section 218 is detachably provided on the tablet charging case 218a, a tablet charging member (not shown) provided in the tablet charging case 218a, and an upper portion of the tablet charging case 218a. The tablet loading cover 218b is provided. The tablet loading case 218a is configured to be removable from the opening 204. The user can load the electrolysis-promoting tablets into the tablet loading case 218a by removing the tablet loading cover 218b from the taken out tablet loading case 218a. The electrolysis promoting tablets loaded in the tablet loading case 218a are loaded into the water storage unit 214.

Specifically, the electrolysis-promoting tablet charging section 218 rotates the tablet charging member when charging the electrolysis-promoting tablet to the water storage section 214. When the tablet charging member rotates, the electrolysis-promoting tablets drop into the water storage unit 214 through a drop opening (not shown) on the bottom surface of the tablet charging case 218a. The electrolysis-promoting tablet charging unit 218 counts the number of electrolysis-promoting tablets that have dropped from the tablet charging case 218a to the water storage unit 214, and if it is determined that one electrolysis-promoting tablet has dropped from the tablet charging case 218a to the water storage unit 214, the tablet Stop the rotation of the dosing member. By dissolving the electrolysis promoting tablets in the water in the water storage section 214, water containing chloride ions is generated in the water storage section 214. In addition, an example of the electrolysis promoting tablet is sodium chloride.

Note that the electrolyzed water spraying device 200 does not have to include the electrolysis-promoting tablet feeding section 218. In this case, the electrolyzed water spraying device 200 may give a notification to the user to instruct the user to insert the electrolysis-promoting tablet by displaying or sounding, and cause the user to directly put the electrolysis-promoting tablet into the water storage unit 214. ..

Further, the electrolytic water spraying device 200 includes a gas detection unit 220 and a control unit 230, as shown in FIG.

The gas detection unit 220 detects a gas containing electrolyzed water generated by the pair of electrodes 217, and outputs an output value according to the detected gas. In the present embodiment, the case where the output value output by the gas detection unit 220 is a voltage value will be described as an example. Details of the gas detector 220 will be described later.

The control unit 230 is provided, for example, on the back side of the operation panel provided on the top surface of the main body case 201 (see FIG. 11), and controls the electrolytic water spraying device 200. The control unit 230 controls the electrolysis of water by the pair of electrodes 217 and also controls the charging of the electrolytically accelerated tablets by the electrolytically accelerated tablet charging unit 218. In particular, the control unit 230 determines the state of the detection gas based on the output value of the detection gas output by the gas detection unit 220. Details of the determination of the state of the detected gas will be described later with reference to FIG. The function of the control unit 230 is realized by a processor (not shown) executing a program stored in a memory (not shown).

As shown in FIG. 12, the water supply unit 215 is installed on the right side surface inside the main body case 201 when viewed from the front, has a structure that can be attached to and detached from the water storage unit 214, and can be taken out from the opening 204. The water supply part 215 is attached to a tank holding part 214 a provided on the bottom surface of the water storage part 214. The water supply unit 215 includes a tank 215a for storing water, and a lid 215b provided at an opening (not shown) of the tank 215a. An opening/closing section (not shown) is provided at the center of the lid 215b, and when the opening/closing section is opened, the water in the tank 215a is supplied to the water storage section 214.

Specifically, when the tank 215a is attached to the tank holding part 214a of the water storage part 214 with the opening of the tank 215a facing downward, the opening/closing part is opened by the tank holding part 214a. That is, when water is poured into the tank 215a and attached to the tank holding portion 214a, the opening/closing portion is opened and water is supplied to the water storage portion 214, and water is stored in the water storage portion 214. When the water level in the water storage unit 214 rises and reaches the position of the lid 215b, the water supply stops because the opening of the tank 215a is sealed with water, and the water remains inside the tank 215a, so that the water level in the water storage unit 214 changes. Whenever the water falls, the water in the tank 215a is supplied to the water storage unit 214. That is, the water level in the water storage unit 214 is kept constant.

Note that the electrolyzed water spraying device 200 may not have the tank 215a as the water supply unit 215. In this case, a line for supplying water to the electrolyzed water spraying device 200 is pulled from the tap water, and when the water level in the water storage section 214 decreases, the water level in the water storage section 214 rises to a predetermined position. Water may be supplied.

As shown in FIG. 13, the spraying unit 219 includes a blower unit 207 and a filter unit 216. The blower unit 207 is provided in the central portion of the main body case 201, and includes a motor unit 209, a fan unit 210 rotated by the motor unit 209, and a scroll-shaped casing unit 211 surrounding them. The motor section 209 is fixed to the casing section 211.

The fan unit 210 is a sirocco fan and is fixed to the rotating shaft 209a extending in the horizontal direction from the motor unit 209, and the motor unit 209 is fixed to the casing unit 211 as described above. The rotation shaft 209a of the motor unit 209 extends from the front surface side to the back surface side of the main body case 201. The casing portion 211 includes a discharge port 212 on the upper surface side of the main body case 201 of the casing portion 211, and has a suction port 213 on the rear surface side of the main body case 201 of the casing portion 211.

The air volume of the blower unit 207 is determined based on the air volume set by the user. The controller 230 controls the rotation amount of the motor unit 209 based on the determined air volume.

The filter unit 216 is a member that brings the electrolyzed water stored in the water storage unit 214 into contact with the room air that has flowed into the main body case 201 (that is, inside the housing) by the blower unit 207. The filter portion 216 is formed in a cylindrical shape, and has a filter 216a provided with a hole through which air can flow in the circumferential portion. The filter 216a is rotatably incorporated in the water storage unit 214 with the central axis of the filter 216a as the center of rotation so that one end thereof is immersed in the water of the water storage unit 214 to retain water. The filter section 216 is rotated by a drive section (not shown), and has a structure in which electrolyzed water and indoor air are brought into continuous contact with each other.

The air passage 208 connects the intake port 202 and the outlet 206, and includes a filter unit 216, a blower unit 207, and an outlet 206 in order from the intake port 202. When the fan unit 210 is rotated by the motor unit 209, the external air sucked from the intake port 202 and entering the air passage 208 sequentially passes through the filter 216a, the air blowing unit 207, and the air outlet 206, and then the electrolytic water spraying device 200. Is blown out of. Thereby, the electrolyzed water generated in the water storage unit 214 is sprayed to the outside. The electrolyzed water sprinkling device 200 does not necessarily sprinkle the electrolyzed water itself, and may sprinkle the active oxygen species derived from the electrolyzed water (including volatilization) generated as a result.

The gas detector 220 is composed of, for example, a semiconductor gas sensor. The gas sensor element is composed of a heater integrated with a metal oxide material. By applying power to the sensor, the metal oxide material is heated by the heater. This gas sensor element detects a change in resistance value caused by a detectable gas coming into contact with the metal oxide material. For example, in a clean atmosphere, the surface of the metal oxide material is affected by oxygen in the atmosphere, the movement of free electrons is restricted, and the conductivity decreases, so that the resistance value is high. When a detectable gas comes into contact with the surface of the metal oxide material in this state, oxygen on the surface of the metal oxide material is consumed, the movement of free electrons, which had been limited up to that point, is released, and the conductivity becomes high, so that the temperature is low. Indicates the resistance value. By converting the difference in the resistance value into a voltage output and acquiring the difference, the gas to be detected can be detected.

A method for determining the state of the detected gas will be described with reference to FIG. FIG. 16 is a flowchart showing the process of determining the state of the detected gas.

First, the control unit 230 repeatedly acquires an output value (a voltage value as an example) output from the gas detection unit 220 for every predetermined period (for example, 1 second) for a predetermined period (for example, 1 minute) (step S21). ). The output value is acquired using, for example, an A/D converter.

The control unit 230 calculates the difference between the output value acquired at step S21 at a certain time point and the output value acquired one cycle before the certain time point. By repeating this, the amount of change in the output value in each cycle is calculated (step S22).

Next, the control unit 230 compares each change amount in each cycle calculated in step S22 with a plurality of predetermined ranges (step S23).

Subsequently, the control unit 230 calculates an integrated value, which is the number of appearances of the variation amount for each of a plurality of predetermined ranges, based on the comparison result of step S23 (step S24). Finally, the state of the detected gas is determined according to the integrated value for each of the plurality of predetermined ranges calculated in step S24 (step S25).

Note that the output results obtained by the state determination are the type of detection gas, the presence or absence of detection gas, the concentration of detection gas, etc. For example, it is possible to determine the type of gas to be detected and the presence/absence of gas to be detected by determining whether or not the ratio of integrated values for each of a plurality of predetermined ranges calculated by the control unit 230 is a specific ratio. .. Further, in addition to the ratio of the integrated value for each of a plurality of predetermined ranges, the value of the integrated value is compared with a value correlated with the density to obtain the density value or the level of the density as an output result. Is also possible.

In addition, in FIG. 16, the control unit 230 compares each change amount of the output value in each cycle calculated using the plurality of output values repeatedly acquired for each predetermined cycle for a predetermined period with a plurality of predetermined ranges. Then, it is explained that the integrated value for each predetermined range is calculated (steps S21 to S24). However, the flowchart of the state determination process of the detected gas shown in FIG. 16 is an example, and for example, the processes of steps S21 to S24 are changed as follows, and the changed processes of steps S21 to S24 are performed at regular intervals. The process of step S25 may be performed after repeatedly executing the period (or a certain number of times). That is, step S21 is changed to a process of acquiring the output value output from the gas detection unit 220 only once, and step S22 is changed to the output value acquired in the changed step S21 and one cycle before that. The difference between the acquired output values is calculated to change the processing to calculate the amount of change. Further, the step S23 is changed to a process of comparing the change amount obtained in the changed step S22 with a plurality of predetermined ranges. In step S24, an integrated value that is the number of appearances of the range including the change amount obtained in step S22 after the change is calculated from the plurality of predetermined ranges based on the comparison result of the step S23 after the change. Change to a process that does. Then, the processes of steps S21 to S24 after this change are repeatedly executed at regular intervals for a predetermined period (for example, 1 minute) or a fixed number of times (for example, 60 times). With this, similarly to the processing results of steps S22 to S24 shown in FIG. 16, the change amount of the output value in each cycle is calculated, the change amount in each cycle is compared with a plurality of predetermined ranges, and a plurality of predetermined ranges are compared. It is possible to calculate an integrated value that is the number of appearances of the amount of change for each predetermined range.

A method for specifically determining the state of the detected gas will be described with reference to FIGS. 17A to 19. 17A to 17C show an example of an output value (voltage value) and a change amount of the gas detection unit 220 when the pair of electrodes 217 of the electrolyzed water generation unit 205 are energized to perform electrolysis. The gas detection unit 220 is arranged in the vicinity of the electrolyzed water generating unit 205 or the like, and has a configuration capable of detecting a gas containing hypochlorous acid by the electrolyzed water generated by the electrolyzed water generating unit 205. The pair of electrodes 217 that form the electrolyzed water generating unit 205 are installed in the water storage unit 214. FIG. 17A is a diagram showing an energized state and elapsed time of the pair of electrodes 217 of the electrolyzed water producing unit 205. Electrolysis is performed by applying a current to the pair of electrodes 217. FIG. 17B is a diagram showing the output value of the gas detection unit 220 in the energized state of the pair of electrodes 217 shown in FIG. 17A. When the electrolysis is performed, the output of the gas detection unit 220 changes according to the detection gas containing hypochlorous acid by the electrolyzed water. For a plurality of output values of the gas detection unit 220 acquired at regular intervals, a change amount that is a difference between an output value acquired at a certain time point and an output value acquired one cycle before the certain time point is obtained. This change amount is shown in FIG. 17C.

The output tendency as shown in FIG. 17B is because the gas detection unit 220 is installed at a position where the gas containing hypochlorous acid by the electrolyzed water generated by the electrolyzed water generation unit 205 can be detected. If this positional relationship is not satisfied, the gas detection unit 220 cannot detect a gas containing hypochlorous acid due to the electrolyzed water generated by the electrolyzed water generation unit 205, so the output of the gas detection unit 220 is a certain stable output. Will be shown. When the gas detection unit 220 is located at a position where it can detect a gas containing hypochlorous acid due to the electrolyzed water generated by the electrolyzed water generation unit 205, the gas detection unit 220 is a detection gas containing a by-product such as a by-product gas. The output tends to increase and decrease sharply due to. That is, the output of the gas detection unit 220 can be recognized as a gas containing a specific substance by making a predetermined change at regular intervals.

FIG. 18 shows an example of the appearance frequency of the amount of change in the output value of the gas detection unit 220 during a predetermined period when electrolysis is performed under specific conditions while the electrodes shown in FIG. 17A are energized. The results of long-term data acquisition under the same electrolysis conditions are shown, and the number of times the amount of change in the output value of the gas detection unit 220 occurs with respect to the acquired data is shown. The output tendency of the appearance frequency shows a similar tendency to some extent, although there is some variation when the positional relationship between the electrolyzed water producing unit 205 and the gas detecting unit 220 and the electrolysis producing condition are determined.

FIG. 19 is a diagram in which the amount of change in each cycle is classified into a plurality of predetermined ranges. By comparing each of the plurality of change amounts calculated in the predetermined period with the plurality of predetermined ranges in FIG. 19, an integrated value that is the number of appearances of the change amount in each of the plurality of predetermined ranges is calculated. As an example, as shown in FIGS. 18 and 19, a plurality of predetermined ranges are set as follows with respect to the amount of change. The threshold range d2 indicates a region in which the amount of change is smaller than −0.05V. The threshold range c2 indicates a region in which the amount of change is −0.05 V or more and less than −0.02 V. The threshold range b2 indicates a region in which the amount of change is −0.02V or more and less than −0.01V. The threshold range a2 indicates a region in which the amount of change is −0.01 V or more and less than 0 V. The threshold range a1 indicates a region in which the amount of change is 0 V or more and less than +0.01 V. The threshold range b1 indicates a region in which the amount of change is +0.01 V or more and less than +0.02 V. The threshold range c1 indicates a region in which the amount of change is +0.02V or more and less than +0.05V. The threshold range d1 indicates a region in which the amount of change is +0.05 V or more.

In the example of FIG. 18, the appearance frequencies of the threshold range b1, the threshold range b2, and the threshold range c2 are high as the predetermined ranges. As an example, the peak of the appearance frequency in the threshold range is the output of the gas detection unit 220 due to the detection gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 205 and the by-product by-product gas. The value changes. From this, it is experimentally confirmed that the peaks in the threshold range b1, the threshold range b2, and the threshold range c2 tend to increase. The appearance frequency of the specific threshold range increases due to the installation positions of the electrolyzed water production unit 205 and the gas detection unit 220, the electrolysis generation conditions, the difference in the sensor characteristics of the gas detection unit 220, and the like. On the other hand, when the type or concentration of the detected gas changes, the tendency of the output change of the output value of the gas detection unit 220 in a constant cycle changes. For example, in the case of a semiconductor gas sensor, the oxygen consumption on the surface of the metal oxide differs depending on the type and concentration of the generated gas. In this way, the type and concentration of the detected gas can be detected based on the tendency of the appearance frequency of the change amount calculated by the control unit 230.

As described above, the amount of change in the output value of the gas detection unit 220 due to the detection gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 205 and the by-product by-product gas is the threshold range b1 as described above. And the peaks of the appearance frequencies shown in the threshold range b2 and the threshold range c2 tend to increase. The control unit 230 compares the tendency of the peak of such appearance frequency with a plurality of predetermined ranges shown in FIG. 19 to calculate an integrated value which is the number of appearances in each of the plurality of predetermined ranges. .. When the change amount of the gas detection unit 220 shows the tendency of the appearance frequency shown in FIG. 18, the integrated value for each of the plurality of predetermined ranges shows a tendency proportional to the area of each threshold range of FIG. 18. When the ratio of the integrated values of the plurality of predetermined ranges shows a proportional relationship with the area of each threshold value range of FIG. 18, if hypochlorous acid is present as the electrolyzed water generated by the electrolyzed water generating unit 205. Can be determined. This makes it possible to identify the detected gas. As a specific example, the threshold value range b1 is the change amount of the output value due to the detection gas containing hypochlorous acid, and the threshold value range b2 and the threshold value range c2 are the change amount of the output value due to the by-product gas that is a by-product. .. By showing the relationship that the ratio of the integrated value for each of the plurality of predetermined ranges is proportional to the area of each threshold value range in FIG. 18, hypochlorous acid and a secondary gas are generated under the assumed generation condition of electrolyzed water. It can be determined that there is. By-products are also produced at the same time when hypochlorous acid is produced. By carrying out the determination in consideration of the reaction of this by-product, it is possible to accurately determine the production of hypochlorous acid. That is, the ratio of the integrated value of the threshold range a1, the threshold range a2, the threshold range b1, the threshold range b2, the threshold range c1, the threshold range c2, the threshold range d1, and the threshold range d2 is proportional to the area of each threshold range of FIG. When the ratio is indicated, it can be determined whether or not hypochlorous acid is contained in the electrolyzed water generated by the electrolyzed water generating unit 205. A specific example of the integrated value for each of a plurality of predetermined ranges will be described with reference to FIG. In FIG. 18, the integrated values for each of the plurality of predetermined ranges calculated in the predetermined period are the threshold range d2 twice, the threshold range c2 30 times, the threshold range b2 20 times, the threshold range a2 once, and the threshold value The range a1 is 3 times, the threshold range b1 is 40 times, the threshold range c1 is 5 times, and the threshold range d1 is 1 time. As described above, when the ratio of the integrated values for each of the plurality of predetermined ranges indicates the relationship of the above ratios, it is determined whether hypochlorous acid is included as the electrolyzed water generated by the electrolyzed water generating unit 205. it can. It should be noted that the determination of whether there is a relationship of the ratio may be performed by setting an arbitrary variation range for a plurality of predetermined ranges. For example, the integrated value of the threshold range d2 is ±10% twice, the integrated value of the threshold range c2 is 30 ±10%, the integrated value of the threshold range b2 is 20 ±10%, and the integrated value of the threshold range a2 is once. ±10%, the integrated value of the threshold range a1 is 3 times ±10%, the integrated value of the threshold range b1 is 40 times ±10%, the integrated value of the threshold range c1 is 5 times ±10%, the integrated value of the threshold range d1 is When it is ±10% once, it may be determined that the ratio of the integrated values in each of the plurality of predetermined ranges satisfies the relationship proportional to the area of each threshold range in FIG. That is, it may be determined that the electrolyzed water generated by the electrolyzed water generation unit 205 contains hypochlorous acid.

As mentioned above, when the installation position and generation conditions are decided, the tendency of the appearance frequency becomes equal. Therefore, the detection gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 205 is calculated by comparing a plurality of changes calculated in a predetermined period with a plurality of predetermined ranges. The accuracy of detecting the concentration of hypochlorous acid is improved by using the magnitude of the integrated value, which is the number of appearances of the variation amount for each of the predetermined ranges. As an example, when the tendency of the appearance frequency shown in FIG. 18 is shown, the description will be made assuming that hypochlorous acid is generated at a specific concentration. When the concentration of hypochlorous acid by the electrolyzed water generated by the electrolyzed water generation unit 205 is higher than the condition of FIG. 18, hypochlorous acid and by-products are generated under the assumed electrolyzed water generation conditions. Therefore, the tendency of the appearance frequency shows a proportional relationship with the area of each threshold range in FIG. Therefore, the ratio of the integrated value, which is the number of appearances of the amount of change in each of the plurality of predetermined ranges, becomes equal. However, since the concentration of hypochlorous acid and byproducts increases, the frequency of appearance increases as a whole, and the integrated value, which is the number of appearances of the amount of change in each of a plurality of predetermined ranges, shows a large output value. On the other hand, when the type of detected gas is different or when the concentration of hypochlorous acid is low, the tendency of the appearance frequency changes, and the relationship of the ratio of integrated values in each threshold range is high when the concentration of hypochlorous acid is high. Will show different output. In addition, the integrated value in each threshold range is small, making it difficult to detect a specific gas. Thus, by using the magnitude of the integrated value in addition to the ratio of the integrated value that is the number of appearances of the amount of change in each of a plurality of predetermined ranges, it is possible to accurately determine the amount of hypochlorous acid produced. ..

Further, in addition to the ratio of the integrated value in each threshold range, the size of the integrated value in each threshold range is compared with a specific comparison threshold value, and when it is equal to or greater than the specific threshold value, it is determined that the gas to be detected exists. it can. First, the ratio of the integrated value of the threshold range a1, the threshold range a2, the threshold range b1, the threshold range b2, the threshold range c1, the threshold range c2, the threshold range d1, and the threshold range d2 is proportional to the area of each threshold range of FIG. Is determined. Furthermore, when the integrated value in each threshold range is larger than the specific threshold value set for each threshold range, it is determined that the gas to be detected exists.

It is also possible to measure the concentration of the gas to be detected with a separate measuring device and compare it with a comparison threshold that correlates with the concentration to convert it into a concentration value. In this case, the comparison threshold in each threshold range can be realized by setting the threshold set according to the condition of the hypochlorous acid concentration or the like.

In the above description, the case of eight areas of the threshold ranges a1 to d2 as the predetermined range has been described, but the voltage range of each threshold range is set to be narrower as a plurality of predetermined ranges, and a larger number of predetermined ranges are set. The determination may be performed according to the range. In order to finely set a predetermined range for the tendency of the appearance frequency of the detection gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 205, hypochlorous acid or a by-product which is a by-product is set. The gas to be detected can be accurately detected in consideration of the gas.

In the above description, the predetermined range is determined by the ratio of the integrated value in all eight areas of the threshold ranges a1 to d2, but not all areas are used and only the integrated value of a specific area is used. The state of the detected gas may be determined based on the ratio. The tendency of the appearance frequency of the detection gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 205 is determined to some extent by the conditions of electrolysis, and therefore, for example, the threshold range b1, the threshold range b2, and the threshold range c2. Even if the determination is made using only the ratio of, it is possible to make the determination with a certain degree of accuracy.

The gas detection unit 220 may be shared for control according to the odor level of the usage environment. The odor shown here is assumed to be, for example, odor caused by cigarette smoke. In this case, the gas detection unit 220 needs to be arranged at a position where the odor component of the environment can be detected. For example, it can be realized by arranging in the air passage 208 or the like. The gas detection unit 220 is used to detect the gas containing hypochlorous acid by the electrolyzed water generated by the electrolyzed water generation unit 205, determine the odor level of the usage environment, and the electrolyzed water spray device 200 according to the odor level. Control.

FIGS. 20A to 20D show an example of the output of the gas detection unit 220 when odor is generated in the usage environment in addition to the states of FIGS. 17A to 17C. FIG. 20A is a diagram showing an energized state and elapsed time of the pair of electrodes 217 of the electrolyzed water producing unit 205. Electrolysis is performed by energizing the pair of electrodes 217 of the electrolyzed water producing unit 205. FIG. 20B is a diagram showing a state of odor occurrence in the usage environment and the elapsed time. 20C is a diagram showing the output value of the gas detection unit 220 in the energized state of the pair of electrodes 217 shown in FIG. 20A and the odor generation state shown in FIG. 20B. The output value of the gas detection unit 220 changed according to the detection gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 205 and the output value due to the generation of odor are superimposed and output. When the odor is generated in the environment of use, the odor diffuses into the space, and the concentration becomes uniform over time in the space. Therefore, as shown in FIG. 20C, the gas detector 220 shows a stable output value to some extent after the odor is generated. Here, when the pair of electrodes 217 are energized, the output of the gas detection unit 220 makes a sharp change due to the detection gas containing hypochlorous acid generated by the electrolyzed water in the electrolyzed water generation unit 205. Further, when the pair of electrodes 217 is in the non-energized state, the output value of the gas detection unit 220 returns to the output level when the odor is generated, and the odor is eliminated, so that the output value tends to return to the same output value as in FIG. 17B. FIG. 20D shows a change amount, which is a difference between an output value acquired at a certain time point and an output value acquired one cycle before a certain time point, in a plurality of output values of the gas detection unit 220 acquired at every constant cycle. Shows.

Comparing FIG. 20D and FIG. 17C, the amount of change in the gas detection unit 220 shows the same output tendency regardless of the presence or absence of odor in the usage environment. That is, a gas containing hypochlorous acid due to the electrolyzed water generated by the electrolyzed water generation unit 205 can be detected regardless of the generation of odor. In other words, the odor of the usage environment can be determined using the gas detection unit 220. In the odor determination of the usage environment, the sharp output change of the gas detection unit 220 when the pair of electrodes 217 is in the energized state leads to a reduction in the detection accuracy of the odor determination. Therefore, for example, processing such as determination is performed excluding the output of the gas detection unit 220 when the pair of electrodes 217 is in the energized state. As a result, the influence of the detection gas containing hypochlorous acid due to the electrolyzed water generated by the electrolyzed water generation unit 205 can be reduced, and the odor level of the use environment can be determined. Based on the result of the odor level determination, the control unit 230 controls the input power to the pair of electrodes 217 of the electrolyzed water generating unit 205, the air volume of the air blowing unit 207, and the like. The gas detection unit 220 detects the gas containing hypochlorous acid by the electrolyzed water generated by the electrolyzed water generation unit 205 and determines the odor level of the usage environment. Thereby, the control of the electrolytic water spraying device 200 according to the odor level of the use environment can be realized without providing an additional sensor while suppressing the cost increase.

Note that the threshold range that determines a plurality of predetermined ranges may be changeable by a user operation or the like. For example, when the gas detector 220 deteriorates in sensitivity due to its life, the amount of change in the output value of the gas detector 220 decreases. The sensitivity can be adjusted by adjusting the threshold value range with respect to the sensitivity deterioration of the gas detection unit 220. It is possible to make settings suitable for the actual use environment, such as manufacturing variations of the gas detection unit 220, deterioration of the service life, and influences due to differences in the use environment. The sensitivity setting method may be performed by providing a sensitivity setting switch on the operation panel provided on the top surface of the main body case 201 and allowing the user to operate the switch. Further, as the set value, a plurality of fixed values determined experimentally may be set, or an arbitrary value may be set.

Note that the integrated value ratio may be changeable. For example, in the electrolyzed water spraying device 200, the generation amount of the secondary gas of the detection gas differs depending on the energization state of the pair of electrodes 217 of the electrolyzed water generation unit 205. Specifically, there are a case where the pair of electrodes 217 of the electrolyzed water producing unit 205 are energized for electrolysis, and a case where the electrolysis is not performed by energizing them. The gas detected by the gas detection unit 220 during energization and de-energization differs in the amount and presence or absence of by-products, which are by-products. Therefore, by making it possible to change the ratio of the integrated values, it is possible to accurately detect even when the energization state of the pair of electrodes 217 of the electrolyzed water producing unit 205 is different. Further, even when the sensor characteristics are changed due to manufacturing variations of the gas detection unit 220, deterioration of life, influences of differences in use environment, etc., the ratio of the integrated value can be changed so that the detection can be performed accurately. .. The method of setting the ratio of the integrated values may be set arbitrarily according to the type and characteristics of the sensor used in the gas detection unit 220. Further, the control unit 230 may automatically switch depending on the electrolyzed water generation state of the electrolyzed water spraying device 200 and the like. The set value of the ratio of the integrated value may be a fixed value that is experimentally determined or an arbitrary value may be set.

In the above description, the output value output from the gas detection unit 220 is repeatedly acquired for a predetermined period in a constant cycle, the change amount of the output value in each cycle is calculated, and the plurality of changes calculated in each cycle are calculated. Each quantity is compared to a plurality of predetermined ranges. Then, each of the calculated plurality of change amounts is classified into one of a plurality of predetermined ranges, an integrated value that is the number of appearances of the change amount in each predetermined range is calculated, and the calculated plurality of predetermined range integrated values are calculated. Although the state of the detected gas is determined based on the value information, it is not limited to this. That is, this state determination result may be acquired every predetermined time, and the final detection gas state determination result may be calculated. By obtaining the state determination result of the detected gas at every predetermined time and performing the averaging process, it is possible to suppress the variation of the determination result, and thus it is possible to improve the determination accuracy.

Also, by using moving average processing as the averaging method, it is possible to output the result of state determination of the detected gas corresponding to the passage of time. In the moving average processing, for example, when the number of data to be averaged is 5, the processing is performed by averaging the past 5 data including the acquired data, and an output showing the tendency of data change from the past is obtained. It is a thing. When a gas containing hypochlorous acid generated by the electrolyzed water generated by the electrolyzed water generation unit 205 is detected, the state of the electrolyzed water changes to a certain degree with time, and thus the moving average process is performed to obtain the electrolyzed water. The state change can be properly discriminated. In the simple averaging process, since the state determination is performed using the data for each predetermined time, a sharp change occurs depending on the data used when performing the averaging process under the influence of the surrounding environment. By the moving averaging process, it is possible to suppress the influence of the surrounding environment and determine the state of the detection gas containing hypochlorous acid by the electrolyzed water generated by the electrolyzed water generating unit 205.

As described above, in the electrolyzed water spraying device 200, the output value is repeatedly acquired from the gas detection unit 220 in a predetermined cycle for a predetermined period, and the change amount of the output value in each cycle is calculated. Further, the calculated plurality of change amounts in each cycle are compared with a plurality of predetermined ranges, and an integrated value that is the number of appearances of the change amount in each of the plurality of predetermined ranges is calculated. By the discrimination based on the ratio of the integrated values in the plurality of predetermined ranges, the electrolytic water spraying device 200 can realize the state discrimination of the gas to be detected with high accuracy.

Although the present disclosure has been described above based on the embodiments, the present disclosure is not limited to the above embodiments, and various modifications can be easily made without departing from the gist of the present disclosure. It can be guessed. For example, the numerical values mentioned in each of the above embodiments are examples, and it is naturally possible to adopt other numerical values.

The electrolyzed water sprinkling device according to the present disclosure is useful as an electrolyzed water sprinkling device for removing (including inactivating) bacteria, fungi, viruses, odors, etc. in the air.

100 Electrolyzed Water Dispersing Device 101 Main Body Case 101A First Main Body Side Surface 102 Intake Port 103 Panel 104 Opening 105 Electrolyzed Water Generating Unit 106 Blowing Out Port 107 Blower Port 108 Air Path 109 Motor Unit 109a Rotating Shaft 110 Fan Unit 111 Casing Unit 112 Discharge Port 113 Suction Port 114 Water Storage Section 114a Tank Holding Section 115 Water Supply Section 115a Tank 115b Lid 116 Filter Section 116a Filter 117 Pair of Electrodes 118 Electrolysis Promoting Tablet Loading Section 118a Tablet Input Case 118b Tablet Input Cover 119 Spraying Section 120 Gas Detection Section 130 Control Section 131 Gas Discrimination Unit 132 Comparison Unit 133 Calculation Unit 200 Electrolyzed Water Dispersing Device 201 Main Body Case 201A First Main Body Side Surface 202 Intake Port 203 Panel 204 Opening 205 Electrolyzed Water Generation Unit 206 Air Blow Port 207 Air Path 209 Motor Unit 209a Rotation Shaft 210 Fan part 211 Casing part 212 Discharge port 213 Suction port 214 Water storage part 214a Tank holding part 215 Water supply part 215a Tank 215b Lid 216 Filter part 216a Filter 217 Pair of electrodes 218 Electrolysis promoting tablet input part 218a Tablet input case 218b Tablet input cover 219 Spraying unit 220 Gas detection unit 230 Control unit

Claims

An electrolyzed water production unit that produces electrolyzed water by a pair of electrodes,
A blowing unit that blows the electrolyzed water generated by the electrolyzed water generation unit from the air outlet by bringing the electrolyzed water into contact with the air sucked into the housing from the air inlet.
A control unit that controls the amount of electric power to be applied to the pair of electrodes of the electrolyzed water generating unit and the air amount of the blower unit,
A gas detection unit for detecting a gas containing the electrolyzed water generated by the electrolyzed water generation unit,
The gas detection unit outputs an output value according to the detection gas detected by the gas detection unit,
The control unit determines the state of the detected gas based on the output value output from the gas detection unit.
The control unit includes a gas determination unit that determines the state of the detected gas,
The gas determination unit repeatedly acquires the output value output from the gas detection unit in a constant cycle, calculates the amount of change in the output value in each cycle, and the state of the detected gas based on the amount of change. The electrolyzed water spraying device according to claim 1, further comprising: a calculation unit that determines
The gas determination unit compares the change amount with one or more predetermined threshold ranges for each of the change amounts in each cycle calculated by the calculation unit, and determines the number of the change amounts included in the predetermined threshold range. Is equipped with a comparison unit that acquires
The electrolysis water spraying according to claim 2, wherein the arithmetic unit determines the state of the detected gas based on the number of the change amounts included in the predetermined threshold range acquired by the comparison unit. apparatus.
The comparison unit compares each of the change amounts in each cycle calculated by the calculation unit with the plurality of predetermined threshold ranges different from each other and is included in each of the plurality of predetermined threshold ranges. Obtaining the number of changes,
The electrolyzed water spraying device according to claim 3, wherein the arithmetic unit determines the state of the detected gas based on the added value stored corresponding to each of the plurality of predetermined threshold ranges.
The plurality of the predetermined threshold ranges can be changed. The electrolyzed water spraying device according to claim 4, wherein the predetermined threshold range is changeable.
The control unit repeatedly acquires the output value output from the gas detection unit for a predetermined period at a constant cycle, calculates a change amount of the output value in each cycle, and for each of the change amounts in each cycle, Comparing the amount of change with a plurality of predetermined ranges, calculating an integrated value that is the number of appearances of the amount of change for each of the predetermined ranges, based on the information of the calculated integrated value for each of the predetermined ranges The electrolytic water spraying device according to claim 1, wherein the state of the detected gas is determined.
The electrolyzed water according to claim 6, wherein the control unit determines generation of a specific gas in the detection gas based on a ratio of the integrated value of the change amount for each of the predetermined ranges. Spraying device.
The control unit determines the concentration of a specific gas in the detection gas based on the integrated value of the change amount for each of the predetermined ranges. Electrolytic water spraying device.
The electrolytic water spraying device according to claim 7 or 8, wherein the ratio of the integrated value is changeable.
The electrolytic water spraying device according to any one of claims 6 to 9, wherein the plurality of predetermined ranges can be changed.
The electrolytic water spraying device according to any one of claims 1 to 10, wherein the output value is a voltage value.
An air blower comprising the electrolytic water spraying device according to any one of claims 1 to 11.